Buying a new puppy is an important decision, especially if you already own a dog. It may be a good idea to ask the previous owners or the pet store where you make your purchase how your puppy interacted with other dogs around him. If he didn't get along or if your other dog has acted aggressively to other dogs, you might have to spend a lot of time with them until they get accustomed to each other.

When the day arrives to introduce your new puppy to your existing dog, you can give both dogs a head start and make them feel more comfortable by making introductions in an unfamiliar place.

Start by introducing your new puppy to your dog in a place other than your home, such as a friend's house or a park that you have never taken your dog to. This will help keep territorial issues out of the way and to keep your dog from feeling threatened. Dogs are territorial and feel that their home is their territory. When another animal crosses their territor, they may feel threatened or become aggressive. To keep this from happening, let your dog meet his new companion at least twice before bringing him into the home.

Never expect dogs to hit it off right away when introducing your new pup to your dog. Just like people, it may take a little while for your dog to become friendly and trusting of the new puppy. On the other hand, if you have a well-natured dog, you may find him treating the new puppy like it was his own.

Always pay close attention when first introducing your new puppy to your dog. If it seems as though the two are not getting along, or there is growling back and forth, step in the middle and give out treats. Spend extra time with the older dog to show it that the puppy isn't stealing your attention. You don't need jealousy adding to the tension. Continue to intercept between the two until they begin to get along. This won’t take long, as between the two they will decide who's the leader and soon will become friends.

Dogs, just like children need a lot of tender, loving care. When introducing your new puppy to your dog, remember that you are lucky to have both of these additions to your family. Treat them with love and you'll get much more in return.